From the aerial parts of Delphinium uncinatum a new diterpenoid uncina
tine and four known norditerpenoid alkaloids have been isolated. By sp
ectral data (H-1 and C-13 NMR) the known compounds were established as
14-acetylperegrine, 14-acetylvirescenine, condelphine and delbrusine.
The structure of the new alkaloid was deduced by 1D and 2D NMR techni
ques. (C) 1998 Elsevier Science Ltd. All rights reserved.